Revision History

Feature Changes

On VPC-DI, traffic is carried on the DI network between VMs within the VPC-DI instance.

Previous Behavior

In releases prior to 21.4, VPC-DI VMs did not enforce encryption of traffic received on the DI network. It accepted both encrypted
and unencrypted packets.

New Behavior

In Release 21.4, most non-midplane TCP/UDP control packets are now encrypted to better meet overall security objectives.

Important

As a result of this feature enhancement, StarOS upgrades are only supported from 21.3.x to 21.4. Upgrades from any earlier
release will not complete successfully. Before upgrading to 21.4, you must upgrade first to Release 21.3.1 or higher.

Downgrade from 21.4 to an earlier release is unaffected by this change.